What happens when the VGA's attribute controller has 8-bit pixels enabled with blinking turned on? Will the 4 bits that are latched be subjected to the 3-bit plus blink bit scheme before being latched together?

So in that way:
Value 0xED becomes 0xED or 0x65, depending on the current blink status of the VGA (every 32 frames).

Or is something strange done with the output? Only the highest bit is toggled on/off?
Value 0xED becomes 0xED or 0x6D, depending on the current blink status of the VGA (every 32 frames).

How about in text modes? In that case, with 8-bit turned off, an 8-bit attribute is processed into a 4-bit font and back value. This is determined by the character font and font used is affected by the blinking setting. So:

1FONT COLOR = low 4 bits of attribute
2BLINK = highest bit of attribute
3BLINKING = Attribute Mode Control Blink bit
4BACK COLOR = high 4 bits of attribute / high 3 bits of attribute (BLINKING AND BLINK)
5FONT_PIXEL = Pixel from VRAM plane 2
6USE_FONT = (BLINKING AND BLINK) ? (FONT_PIXEL AND CURRENT_BLINK), else FONT_PIXEL
7COLOR = USE_FONT ? FONT COLOR, else BACK COLOR
8The COLOR value is processed through the attribute lookup Registers (Attribute Controller Registers 0-15)

What happens when you turn 8-bit colors on in text mode? Will the FONT COLOR be changed to the attribute, and the background color to attribute AND 0x7F?

Anyone has a (IBM) VGA to verify blink operations in 8-bit mode? What does it do when blinking and 8-bit colors are enabled in the Attribute Mode Control register?

This should be able to test by:
1. Set characters during text mode 03h (different attribute font/back), enable 8-bit colors.
2. Plot all 256 colors on screen during graphics mode 13h, enable blinking.

Anyone has results from a (IBM) VGA? What happens in these 2 configurations?